package com.test.netty.simple;
/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

import com.test.netty.ssl.SslOneWayContextFactory;
import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.DelimiterBasedFrameDecoder;
import io.netty.handler.codec.FixedLengthFrameDecoder;
import io.netty.handler.codec.LineBasedFrameDecoder;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslHandler;
import io.netty.util.CharsetUtil;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.GenericFutureListener;

import javax.net.ssl.SSLEngine;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.nio.charset.Charset;

/**
 * Sends one message when a connection is open and echoes back any received
 * data to the server.  Simply put, the echo client initiates the ping-pong
 * traffic between the echo client and server by sending the first message to
 * the server.
 */
public final class EchoClient {

    static final String HOST = System.getProperty("host", "127.0.0.1");
    static final int PORT = Integer.parseInt(System.getProperty("port", "8007"));
    static final int SIZE = Integer.parseInt(System.getProperty("size", "256"));

    public static void main(String[] args) throws Exception {

        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group)
                    .channel(NioSocketChannel.class)
                    .option(ChannelOption.TCP_NODELAY, true)
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch) throws Exception {
                                ChannelPipeline p = ch.pipeline();
                                String sChatPath = "d:\\test\\cChat.jks";
                                SSLEngine engine = SslOneWayContextFactory.getClientContext(sChatPath).createSSLEngine();
                                engine.setUseClientMode(true);
                                p.addLast("ssl", new SslHandler(engine));
                                //p.addLast(new LineBasedFrameDecoder(10000));
                                //p.addLast(new FixedLengthFrameDecoder(10));
                                //ByteBuf delimiter = Unpooled.copiedBuffer("_#_".getBytes());
                                //p.addLast(new DelimiterBasedFrameDecoder(100000,delimiter));
                                p.addLast(new StringEncoder(CharsetUtil.UTF_8));
                                p.addLast(new StringDecoder(CharsetUtil.UTF_8));
                                //p.addLast(new LoggingHandler(LogLevel.INFO));
                                p.addLast(new EchoClientHandler());
                        }
                    });

            // Start the client.
            Channel ch = b.connect(HOST, PORT).sync().channel();

            ChannelFuture lastWriteFuture = null;
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    System.in));
            for (;;) {
                String line = in.readLine();
                if (line == null) {
                    break;
                }
                // Sends the received line to the server.
                //ByteBuf  bb = Unpooled.copiedBuffer(line + "\r\n", Charset.defaultCharset());
                lastWriteFuture = ch.writeAndFlush(line);
                lastWriteFuture.addListener(new GenericFutureListener(){

                    @Override
                    public void operationComplete(Future future) throws Exception {
                        System.out.println(future);
                    }
                });
                // If user typed the 'bye' command, wait until the server closes
                // the connection.
                if ("bye".equals(line.toLowerCase())) {
                    ch.closeFuture().sync();
                    break;
                }
            }
        } finally {
            // Shut down the event loop to terminate all threads.
            group.shutdownGracefully();
        }
    }
}